Milling-machine cutter



June 26, 1923. 1,460,030

J. MATTSON MILLING MACHINE CUTTER Filed Dec. 21 1922 A TTORNE S srmfo. I

Patented June 26, 1923.

JULIUS IIIATTSON, OF CHICAGO, ILLINOIS.

MILLING-MACHINE CUTTER.

Application filed December 21, 1922.

T 0 all whom it may concern Be it known that I, Junurs MA'rrsoN, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Milling-Machine Cutters, of which the following is a full, clear, and exact description.

My invention relates to improvements in. milling machine. cutters and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide an improvement over that form of the device disclosed in my co-pending application Serial No. 597,898, filed October80, 1922.

In said prior application I disclosed a tool:

plate which has cutters mounted therein, these cutters being circular and non-circular, the circular cutters being adapted to do the rough cutting, and the non-circular cutters being adapted to do the finishing cutting. The present form of the device differs from the form disclosed in my co -pending application Serial "No. 597,898 in that the circular cutters are disposed at a difl'erent angle with respect to the work being out than are the non-circular cutters, whereby the circular cutters can more readily do the rough cutting than they could if theyiwere disposed at the same angle as the finishing cut-- ters, i. e., the non-circular cutters.

A further object of my invention is to provide a deviceoi the type described which has novel means for locking the cutters in adjusted position. j v

A further objectof my invention is to provide a device ofthe type described inv which the cutters may be rotated so as to bring a different portion. of their cutting edges in engagement with the work and which has means for holding the cutters in their adjusted position. I I j A further object of my invention 1S1t0 provide a device of the type described which is relatively simple in construction and which is thoroughly efiicient for the purpose intended.

Otherobjects and advantages will appear in the following specification, and the novel features ofthe invention will be particularly pointed out in the appended claims. I

My invention is illustrated in the. accompanying drawings forming part of this apfl plication, in which a I F'gure 1. is a plan view of the device,

Serial No. 608,270.-

cutters.

In carrying out my invention I make use of a tool plate 1 which is adapted to be secured to a mandrel 2, whereby the tool plate will. be rotated with the mandrel. The plate 1 is provided with a plurality of sets of slots therein. Each set comprises a slot 3, which extends at an angle with respect to the axis of the tool plate, and a slot 4, which is disposed at anangle with respect to the slot 3. The slots 3 and 4 are in reality a.

single recess which has a radially extending side and an angularly extending side 4. The slot 3 extends inwardly so as to provide a recess 5. As clearly shown in Figure 1.

the tool plate 1 has threaded bores 6 and 7 therein which are disposed in a vertical plane and adjacent to the recess 5.

Cutter carrying members 8 and 9 are disposed in the slots 3 and 4 and are adapted to be clamped in adjusted position by means of a wedge-shaped member 10. As clearly shown in Figure 1,-the member 8 extends into the recess. 5. The member 10 is provided with two bores 11 and 12 which are also disposed in vertical alignment with re spect to each other and are adapted to be aligned with the bores 6 and 7. "Bolts 13 and 14 are disposed in the bores 11 and 1:2 and are received in threaded bores 6 and. 7. The bolts 13 and 14 are provided with enlarged disc-shaped portions 15 and 16 adj acent to their inner ends. It will be noted from Figure 1 thatt-he inner ends of the bolts 13 and 14, i. e., the portions of the bolts on the inner sides of the discs 15 and 16 are threaded and are received in the bores 6 and 7. The members 8 and 9 have recesses 16 therein which receive the disc portions 15 and .16. A rotation of-the bolts 13 and 14 will. cause the portions 15 and 16 to carry the members 8 and 9 inwardly in the slot 3. In this manner the members 8 and 9 are moved at will.

Afterthe members 8 and 9 are adjusted in position, the wedge-shaped members 10 are moved inwardly so as to clamp the members 8 and 9 in adjusted position. This movement is accomplished by means of nuts 17 and 18. The members 8 and 9 are disposed at different angles With respect to each other, as heretofore stated, and are adapted to carry cutters at their lower ends. The

. member 8 carries non-circular cutters, while the member 9 carries circular cutters. The circular cutters which are carried by the member 9 are disposed at a greater angle than are the non-circular cutters which are carried by the member 8. It will therefore be seen that circular cutters are adapted to more readily cut into the work than are the non-circular cutters, since the circular cutters are disposed at a greater angle than the non-circular cutters.

In Figures 3 and 4: I have shown means for securing the. cutters to the members 8 and9. It will be noted from Figure 3 that the circular cutters 19 are secured to the members 9 by means of bolts 20. The bolts 20 have heads 21 which are received in the recesses in the members 9 whereby the outer surface of the heads are flush withtheouter surface of the members 9. A nut 22 is vmounted on the bolt 20 an d when tightened causes the cutter 19 to trictionally engage with the member 9 The member 9 also carries means for positively preventing the rotation of the cutter 19 on the bolt 20 after the nut 22 is once tightened. As clearly shown in Figure 4, the cutter 19 has recesses 23 therein, these recesses being disposed in a circle which is concentric with the axis of the cutter. The member 9 has a wedge shaped opening 2itherein in which a tapered pin 25 is disposed. The head of the pin 25 is adapted to be received in any one of the openings 2301? the member 19. When the nut 22 tightened it securely holds the cutter in engagement with the member 9 so that the pin 25 will be received in one of the openings 23 and thus hold the cutter 19 from rotation. In like manner the non-circular cutter 26 is provided with openings 27 in which the head of a tapered pin 28 is adapted to, be received. The pin'28 is mounted in an open- 1ng29 in the member 8. The cutter 26 is secured in place to the member 8 by means of a bolt 30 that has its threaded portion lnserted in a threaded bore in the member 8. The cutting edges of the cutter 26 are of equal length and are adapted to be swung into such a position as to be'brought into engagement with thework to be cut.

From the foregoing description of the various parts of the device, theop'eration thereof may be readily understood. The cutters19 and 26are secured to the members 9 and 8 by the means heretofore described, and are held in place by the pins 25 and 28 respectively. The cutters 19 and 26-may be ad usted with respect to the work 31 by merely moving the members 9 and 8 into the desired position. The members Sand 9 may be moved upwardly or downwardly together so as to raise or lower the cutters with re.

spect to the work. After the members 8 and 9' are moved into thcposition desired, they are held in place by means of the wedgeshaped member 10. This member in turn is held in place by means of the nuts 17 and 18. The circular cutters are disposed at a greater distance from the center of rotation of the tool plate 1 than are the non-circular cutters. On the other hand, the non-circular cutters are disposed in a lower plane than are the circular cutters. In this manner the circular cutters are adapted to do the rough cutting and the non-circular cutters to do the finishin cutting. It will therefore be observed that the device, equipped with the cutters 19 and 26, is adapted to make a rapid out which is smooth. The cutters 19 and 26 are provided with central bores 32 and 33 by means of which the cutters may be mounted upon the lathe so as to be sharpened. As heretofore stated, the cutters are held against rotation by means of the' pins.

The disposing of the circular cutters at a greater angle than the non-circular-cutters provides aflnovel means for providing a device which is adapted to make a rapid yet smooth out. The device is extremely efiicient for the purpose intended, and is not likely to easily get out of order.

I claim:

1. A device of the type described comprising a tool plate, and circular and non-circular cutters carried by saidtool plate, said non-circular cutters being turned more at right angles to the direction of travel of said circular cutters than the circular cutters.

2. 'A device of the type described comprising a tool-plate, cutter carrying members adjustably secured to said plate, and circular and non-circular cutters carried by said members. v p

3. A device of the type described com prising a'tool plate, cutter carrying members adjustably secured to said plate, means for securing said members in position, circular and non-circular cutters carried by said members and means for locking said cutters against rotation. y

4. A device of the type described comprising a tool plate, cutter carrying members adjustably secured to said plate, means for securing said members in position, circular and non-circular cutters carried by said members and means for locking said cutters against rotation, said last named means comprising pins carried by said members, said cutters having recesses therein adapted to receive said pins, whereby said cutters are held against rotation.

5. A device of the type described comprising a tool plate having recesses therein, two

cutter carrying members disposedin each recess, the cutters in each recess extending at an angle with respect to each other, and

a wedge for each set of members, said wedge being adapted to hold said members in place.

6. A device of the type described comprising a tool plate having recesses therein, two cutter carrying members disposed in each recess, and means for holding said members in place, said means being adapted to forcibly eject said members when said means is removed from said plate.

7. A device of the type described comprising a tool plate having wedge-shaped recesses therein, two cutter carrying members disposed in each recess, a wedge for holding each set of members in place, a set screw for securing said wedge to said plate, and a disc carried by said set screw and being operatively connected to said members so as to forcibly eject said members from said plate when said screw is removed from said plate.

8. In a device of the type described, a tool plate having wedge-shaped recesses therein, two tool carrying members disposed in each recess, and being inclined at difierent angles with respect to each other, a wedge for holding said members in place, a set screw for securing said wedge to said plate, a disc carried by said set screw for moving said members into or out of said recess when said set screw is actuated, and a nut carried by said set screw for forcing said wedge into engagement with said members, whereby said members are locked in place.

JULIUS MATPSON. 

